It would perform a little better if you had installed Windows with AHCI enabled instead of using the IDE settings.
Have you ran the SSD Tweak Utility?
SSD Tweak Utility download from Guru3D.com
Do you have TRIM enabled?
How do you know if TRIM is working?
Go to the Command Prompt and type:
fsutil behavior query disabledeletenotify
<Enter>
DisableDeleteNotify = 1 (Windows TRIM commands are disabled)
DisableDeleteNotify = 0 (Windows TRIM commands are enabled)
How do I Enable TRIM?
Go to the Command Prompt and type:
fsutil behavior set disabledeletenotify 0
<Enter>
How do I Disable TRIM?
Go to the Command Prompt and type:
fsutil behavior set disabledeletenotify 1
<Enter>
Make sure to empty your recycle bin before you run the Benchmark.